No problem Eddy.

The profile rail bearings were second-hand (fa-system ebay) and arrived with grease in. I've never added any since (about 3 years ago!) as they seem to keep running smoothly. I don't get in the garage much, perhaps 1 hour per week, and most of that time I'm doing improvements or other non-cutting work.

I've greased the ballscrews every now and again.